Established in 1958, Yantai Dasteck Chemicals Co., Ltd. is a specialized chemical manufacturer, occupying a total of 160,000 sq. m and floorage of 50,000 sq. m. Our products are widely used in the fields of paper-making, printing and dyeing in textile, oil refining, petrochemical, high-speed rail, nuclear power, wind powder and epoxy resin composites.


　　Our traditional product is Thiourea Dioxide. We started to manufacture Thiourea Dioxide since 1983. In our long history, our company has accumulated rich production and application experiences, hence becoming the industry-leading enterprise. The high stability, security and good efficiency of our products are always recognized and highly praised by domestic and foreign users.


　　In 1989, we set a precedent for industry standards in Thiourea Dioxide production, which marked the end of an era when no standards or criteria in TDO (Thiourea Dioxide) production is present. Being the main drafting unit, we have contributed to the three revisions of national standards of TDO, each in 1989, 1999 and 2009.


　　Our company was elected as the director of the National TDO (Thiourea Dioxide) and Relevant Industries Association in the year 2000 for our world-wide reputation and excellent product quality, shown our recognition by the industry peers. It also established our industrial leading position.


　　Our Pulp Bleaching Agent occupies most shares of both domestic and foreign market for its perfect pre-sale and after-sale services. We are the stable supplier for many large paper-making enterprises.


　　We are always keeping developing new products for years. The new products are pushed to the market one after another, including Strong Reductive Agent, Hydrogen Peroxide, Reduction Clearing Agent, Polyetheramine, Desulfurizing Agent, Dicyandiamide and Thiourea etc.


　　The Polyetheramine series products we developed recently can completely replace imports and fill the domestic gaps in this field with high quality and low price. Being the key component of spray Polyurea and RIM, these products have excellent tensile strength, abrasion resistance, and corrosion resistance, that can be widely used for primary structure protection of important concretes, steel structure etc. commonly found in high-speed railways, high-class floor, wind power generation composite blade materials and so on.


　　Our company is located at the beautiful coastal city Yantai, which has well developed traffic, an accessible geographical location, all leading to convenient and quick export.


In 1958 Yantai General Chemical Works established, primary products are Sulphuric Acid and chemical fertilizer in the beginning.

In 1978 A new plant producing Hydrogen Peroxide with 2000 mt/a comes on stream. We become one of the few plants that can produce H2O2.

In 1983 we started to produce Thiourea Dioxide.

In 1985 the plant for producing Stearic Acid, Hydrogenated Oil and Glycerin was put into operation. The annually output exceeds 10,000 mt.

In May 1989, as the main drafting unit, we contributed to the revisions of national standards of Thiourea Dioxide.

In November 1992 Yantai Dasteck Chemicals Co., Ltd. was established, jointly invested by Dastech Internationl Inc.

In 1999 we contributed to the second revisions of national standards of Thiourea Dioxide.

In April 2000 we were elected as the director of the National TDO and Relevant Industries Association.

In May 2000 Dasteck passed ISO9002 certification

In December 2000 We developed a new product, the eco-friendly Pulp Bleaching Agent.

In August 2001 SRA series products were developed.

In March 2002 we researched and developed a high-efficient fixing agent which can replace soda ash. This changed the traditional way with soda in textile.

In September 2002 we began to get involved in other chemicals, such as Dimethylhydantoin, Guanidine Sulfamate, Zirconium Tetra-n-Butoxide and so on.

In 2003 our new product, 5 in 1 Boiling Brightener agent was promoted to the market.

In 2004 we successfully developed Polyetheramine series products and put into operation in 2006. These products filled the domestic blank and completely replace the imports.

In 2006 we started to develop KL-I high efficiency desulfurization agent and corrosion inhibitor.

In 2007 desulfurization agent was added to our product lineup.

From 2008 to 2012, Polyetheramines was widely applied in high-speed rail, nuclear power and wind power.

In 2009 we contributed to the third revisions of national standards of Thiourea Dioxide.

In 2012 Dasteck began to develop mineral auxiliaries and agricultural high-efficient non-toxic herbicides.